//-------------------------------------------------------------------------------------------------------
// ClearTypeFadeTo / ClearTypeFadeIn / ClearTypeFadeOut
//
// Custom fade in and fade out functions for jQuery that will work around
// IE's bug with bold text in elements that have opacity filters set when
// also using Window's ClearType text rendering.
//
// New Parameter:
// bgColor    The color to set the background if none specified in the CSS (default is '#fff')
//
// Examples:
// $('div').ClearTypeFadeIn({ speed: 1500 });
// $('div').ClearTypeFadeIn({ speed: 1500, bgColor: '#ff6666', callback: myCallback });
// $('div').ClearTypeFadeOut({ speed: 1500, callback: function() { alert('Fade Out complete') } });
//
// Notes on the interaction of ClearType with DXTransforms in IE7
// http://blogs.msdn.com/ie/archive/2006/08/31/730887.aspx
(function($) {
	$.fn.ClearTypeFadeTo = function(options) {
		if (options)
			$(this)
				.show()
				.each(function() {
					if (jQuery.browser.msie) {
						// Save the original background color
						$(this).attr('oBgColor', $(this).css('background-color'));
						// Set the bgColor so that bold text renders correctly (bug with IE/ClearType/bold text)
						$(this).css({ 'background-color': (options.bgColor ? options.bgColor : '#fff') })
					}
				})
				.fadeTo(options.speed, options.opacity, function() {
					if (jQuery.browser.msie) {
						// ClearType can only be turned back on if this is a full fade in or
						// fade out. Partial opacity will still have the problem because the
						// filter style must remain. So, in the latter case, we will leave the
						// background color and 'filter' style in place.
						if (options.opacity == 0 || options.opacity == 1) {
							// Reset the background color if we saved it previously
							$(this).css({ 'background-color': $(this).attr('oBgColor') }).removeAttr('oBgColor');
							// Remove the 'filter' style to restore ClearType functionality.
							$(this).get(0).style.removeAttribute('filter');
						}
					}
					if (options.callback != undefined) options.callback();
				});
	};

	$.fn.ClearTypeFadeIn = function(options) {
		if (options)
			$(this)
				.css({ opacity: 0 })
				.ClearTypeFadeTo({ speed: options.speed, opacity: 1, callback: options.callback });
	};

	$.fn.ClearTypeFadeOut = function(options) {
		if (options)
			$(this)
				.css({ opacity: 1 })
				.ClearTypeFadeTo({ speed: options.speed, opacity: 0, callback: options.callback });
	};
})(jQuery);
